A highway which is not part of a major route, but nevertheless forming a link in the national route network. In developed countries it normally has 2 lanes and the traffic for both directions is usually separated by a central line on the road. In areas with worse infrastructure road quality may be far worse.

How to map

To map a simple secondary highway you can just draw a line for it. Select all ways which belong to the highway and tag them with highway=secondary. Use oneway=yes when it is not possible to drive in both directions on the highway. Make sure the way points in the same direction as the one way goes, otherwise reverse the direction or use oneway=-1.

To attach more information for the highway you should add further keys.